*{
	box-sizing: border-box;
}
body{
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
	font-size: 16px;
}
button{
	height: 36px;
	width: 80px;
	cursor: pointer;
	margin: 10px auto;
	background-color: #2335FC;
	border: 2px solid #2335FC;
	border-radius: 5px;
	color:#fff;
}
#mask{
	display: none;
	background-color: rgba(122,122,122,0.5);
	/*下面在引用task6-1时设为有效*/
	/*position: fixed;
	left: 0;
	top: 0;
	right: 0;
	bottom: 0;*/
}
.pop{
	width: 500px;
	height: 300px;
	border: 1px solid gray;
	border-radius: 5px;
	display: none;
	/*下面一句引用task6-1时设为有效*/
	/*position: absolute;*/
	font-size: 1.2em;
	background-color: #fff;
}
.pop-head{
	margin: 0;
	height: 50px;
	line-height: 50px;
	background-color: #898383;
	color: #EAE2E2;
	font-size: 1.4em;
}
.pop-btns{
	position: absolute;
	bottom: 0px;
	right: 15px;
}

.place{
	padding: 50px;
	margin:20px;
	background-color: #B3A3E4;
	color: #fff;
}

main{
	text-align: center;
}
main button{
	height: 40px;
	width: auto;
}